UPDATE 4-Qualcomm outlook off, cites increasing competition

* Q4 Rev $2.69 bln vs Wall St view $2.72 bln

* Sees FY rev $10.5 bln-$11.3 bln vs Wall St view $11.6 bln

* Extends deal with Samsung

* Sees competition intensifying, slower phone replacements

* Shares rise in after-hours trading (Adds executive quote, analyst quote, byline)

By Sinead Carew

NEW YORK, Nov 4 (Reuters) - Wireless chip supplier Qualcomm Inc (QCOM.O) on Wednesday forecast weaker than expected full-year results, but its extension of a key deal with Korea's Samsung Electronics (005930.KS) helped offset the disappointment for some investors.

The company said aggressive competition in the mobile phone chip market would hurt its profits next year along with slowing handset upgrades by consumers against the backdrop of a lackluster rebound from the recession.

"The kind of revenue growth and earnings growth we've projected for the coming year is lower than Qualcomm has experienced for the last several years," Chief Financial Officer Bill Keitel told Reuters. "Competition is very intense and we expect the level of competitiveness to edge up."